Let us start here, from square one. No, from Zero!

reader/message.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <vector>
+#include <cstdint>
+
+class Message {
+private:
+    std::vector<uint8_t> encoded;
+protected:
+    std::vector<uint8_t> data;
+
+    inline void reencode() { encoded.clear(); }
+
+public:
+    explicit Message(std::vector<uint8_t> data);
+
+    uint8_t chk_sum();
+
+    std::vector<uint8_t> get_data_encoded();
+
+    inline std::vector<uint8_t> get_data() { return data; }
+
+    void print_debug();
+};